GB2263345B - Zoom lens system - Google Patents

Zoom lens system

Info

Publication number
GB2263345B
GB2263345B GB9300381A GB9300381A GB2263345B GB 2263345 B GB2263345 B GB 2263345B GB 9300381 A GB9300381 A GB 9300381A GB 9300381 A GB9300381 A GB 9300381A GB 2263345 B GB2263345 B GB 2263345B
Authority
GB
United Kingdom
Prior art keywords
zoom lens
lens system
zoom
lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9300381A
Other languages
English (en)
Other versions
GB2263345A (en
GB9300381D0 (en
Inventor
Takayuki Ito
Tetsuya Abe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB9300381D0 publication Critical patent/GB9300381D0/en
Publication of GB2263345A publication Critical patent/GB2263345A/en
Application granted granted Critical
Publication of GB2263345B publication Critical patent/GB2263345B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
    • G02B15/1421—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only the first group being positive
GB9300381A 1992-01-14 1993-01-11 Zoom lens system Expired - Fee Related GB2263345B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4042495A JPH05188293A (ja) 1992-01-14 1992-01-14 ズームレンズ

Publications (3)

Publication Number Publication Date
GB9300381D0 GB9300381D0 (en) 1993-03-03
GB2263345A GB2263345A (en) 1993-07-21
GB2263345B true GB2263345B (en) 1995-06-07

Family

ID=12637643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9300381A Expired - Fee Related GB2263345B (en) 1992-01-14 1993-01-11 Zoom lens system

Country Status (5)

Country Link
US (1) US5463499A (de)
JP (1) JPH05188293A (de)
DE (1) DE4300840B4 (de)
FR (1) FR2686160B1 (de)
GB (1) GB2263345B (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282459B (en) * 1991-11-25 1996-07-03 Asahi Optical Co Ltd Optical system having a biaspheric lens and an aspheric lens
GB2261744B (en) * 1991-11-25 1996-07-03 Asahi Optical Co Ltd Variable power view finder with aspheric lens surfaces
JP3253405B2 (ja) * 1993-03-26 2002-02-04 オリンパス光学工業株式会社 ２群ズームレンズ
US5412508A (en) * 1993-07-13 1995-05-02 Industrial Technology Research Institute Compact zoom lens system
JP3366092B2 (ja) * 1993-12-24 2003-01-14 オリンパス光学工業株式会社 高変倍比２群ズームレンズ
US5633760A (en) * 1994-02-03 1997-05-27 Nikon Corporation Zoom lens
JP3366101B2 (ja) * 1994-03-23 2003-01-14 オリンパス光学工業株式会社 高変倍比２群ズームレンズ
JPH07306361A (ja) * 1994-05-11 1995-11-21 Canon Inc 小型のズームレンズ
US5642231A (en) * 1994-11-30 1997-06-24 Eastman Kodak Company Compact 3X zoom lens
US5602676A (en) * 1994-11-30 1997-02-11 Eastman Kodak Company Compact zoom lens with reduced aspheric decenter sensitivity
JPH08338946A (ja) * 1995-06-13 1996-12-24 Minolta Co Ltd ズームレンズ
JPH09127415A (ja) * 1995-11-06 1997-05-16 Fuji Photo Optical Co Ltd ２群ズームレンズ
KR100189064B1 (ko) * 1996-08-30 1999-06-01 이해규 소형 광각 줌렌즈
JP3769373B2 (ja) * 1997-11-19 2006-04-26 フジノン株式会社 明るい広角レンズ
JP3435364B2 (ja) * 1998-12-24 2003-08-11 ペンタックス株式会社 ズームレンズ系
US7110188B2 (en) * 2003-05-27 2006-09-19 Konica Minolta Opto, Inc. Small imaging lens and imaging apparatus
JP2005352060A (ja) * 2004-06-09 2005-12-22 Fujinon Corp 小型の大口径広角レンズおよびこれを備えたカメラ
KR100616616B1 (ko) * 2004-09-01 2006-08-28 삼성전기주식회사 카메라 모듈의 자동 초점조절 광학계
DE102005038542A1 (de) 2005-08-16 2007-02-22 Forschungszentrum Karlsruhe Gmbh Künstliches Akkommodationssystem
DE102007008374B4 (de) 2007-02-21 2008-11-20 Forschungszentrum Karlsruhe Gmbh Implantierbares System zur Bestimmung des Akkommodationsbedarfes durch Messung der Augapfelorientierung unter Nutzung eines externen Magnetfelds
DE102009059229A1 (de) 2009-12-18 2011-06-22 Karlsruher Institut für Technologie, 76131 Implantierbares System zur Bestimmung des Akkommodationsbedarfs
JP5823522B2 (ja) * 2011-08-25 2015-11-25 富士フイルム株式会社 撮像レンズおよびこれを用いた撮像装置
CN103765279B (zh) * 2011-08-25 2016-03-02 富士胶片株式会社 成像镜头和包括该成像镜头的成像设备
CN103748496B (zh) 2011-08-25 2016-10-19 富士胶片株式会社 成像镜头和包括该成像镜头的成像设备
TWI460465B (zh) 2012-04-20 2014-11-11 Largan Precision Co Ltd 光學影像鏡頭系統組
TWI474072B (zh) 2012-06-14 2015-02-21 Largan Precision Co Ltd 光學影像鏡片系統組
TWI448725B (zh) 2012-10-22 2014-08-11 Largan Precision Co Ltd 影像擷取光學鏡片系統
KR101547460B1 (ko) * 2013-12-31 2015-08-27 주식회사 코렌 광학 렌즈계
TWI676061B (zh) 2018-08-10 2019-11-01 大立光電股份有限公司 取像光學鏡組、取像裝置及電子裝置
CN115248497A (zh) * 2021-04-28 2022-10-28 华为技术有限公司 光学镜头、摄像头模组和电子设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099846A (en) * 1975-09-08 1978-07-11 Canon Kabushiki Kaisha Variable magnification lens system
GB2215086A (en) * 1988-01-29 1989-09-13 Asahi Optical Co Ltd Zoom lens system for use in a compact camera
US4909613A (en) * 1988-05-02 1990-03-20 Ricoh Company, Ltd. Zoom lens
US4936661A (en) * 1987-07-23 1990-06-26 Opcon Associates, Inc. Zoom lens with short back focal length
GB2237403A (en) * 1989-09-29 1991-05-01 Asahi Optical Co Ltd Two group zoom lens system for use with a compact camera
GB2240637A (en) * 1989-11-21 1991-08-07 Asahi Optical Co Ltd Zoom lens system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62264019A (ja) * 1985-11-28 1987-11-17 Asahi Optical Co Ltd コンパクトカメラ用ズ−ムレンズ
JP2715385B2 (ja) * 1987-06-12 1998-02-18 オリンパス光学工業株式会社 コンパクトなズームレンズ
US5071235A (en) * 1988-04-15 1991-12-10 Konica Corporation Small type variable focal length lens
JP2918115B2 (ja) * 1988-09-30 1999-07-12 キヤノン株式会社 防振機能を有した変倍光学系
JP2900434B2 (ja) * 1989-10-13 1999-06-02 ミノルタ株式会社 コンパクトなズームレンズ
US5270867A (en) * 1991-12-13 1993-12-14 Eastman Kodak Company Compact zoom lens having a weak front lens group

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099846A (en) * 1975-09-08 1978-07-11 Canon Kabushiki Kaisha Variable magnification lens system
US4936661A (en) * 1987-07-23 1990-06-26 Opcon Associates, Inc. Zoom lens with short back focal length
GB2215086A (en) * 1988-01-29 1989-09-13 Asahi Optical Co Ltd Zoom lens system for use in a compact camera
US4909613A (en) * 1988-05-02 1990-03-20 Ricoh Company, Ltd. Zoom lens
GB2237403A (en) * 1989-09-29 1991-05-01 Asahi Optical Co Ltd Two group zoom lens system for use with a compact camera
GB2240637A (en) * 1989-11-21 1991-08-07 Asahi Optical Co Ltd Zoom lens system

Also Published As

Publication number Publication date
GB2263345A (en) 1993-07-21
JPH05188293A (ja) 1993-07-30
DE4300840B4 (de) 2005-12-22
GB9300381D0 (en) 1993-03-03
US5463499A (en) 1995-10-31
FR2686160A1 (fr) 1993-07-16
DE4300840A1 (de) 1993-07-15
FR2686160B1 (fr) 1995-03-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060111